In the following passage some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

The coded box placed on the first page of every chapter (1)_________ quick response code. The first QR code is to (2)_________ the complete e-textbook. The (3)_________ QR codes will help you access the relevant e-resources linked to each other. This will help you (4)_________ your learning in a (5)__________ manner.